/*
* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description: Implementation
*
*/
#include <usbman.h>
#include "cusbservicecontrol.h"
#include "debug.h"
#include "panic.h"
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
CUsbServiceControl::CUsbServiceControl(MUsbServiceControlObserver& aObserver,
RUsb& aUsb) :
CActive(CActive::EPriorityStandard), iObserver(aObserver), iUsb(aUsb),
iPersonalityId(0)
{
CActiveScheduler::Add(this);
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
CUsbServiceControl::~CUsbServiceControl()
{
LOG_FUNC
Cancel();
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CUsbServiceControl::ConstructL()
{
LOG_FUNC
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
CUsbServiceControl* CUsbServiceControl::NewL(
MUsbServiceControlObserver& aObserver, RUsb& aUsb)
{
LOG_FUNC
CUsbServiceControl* self = new (ELeave) CUsbServiceControl(aObserver,
aUsb);
CleanupStack::PushL(self);
self->ConstructL();
CleanupStack::Pop(self); // pop self
return self;
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
TInt CUsbServiceControl::StartL(TInt aPersonalityId)
{
LOG_FUNC
LOG1( "aPersonalityId = %d" , aPersonalityId);
TUsbServiceState serviceState;
TInt err = iUsb.GetServiceState(serviceState);
if (KErrNone != err)
{
return err;
}
switch (serviceState)
{
case EUsbServiceIdle:
{
LOG( "UsbServiceState == EUsbServiceIdle" );
iPersonalityId = aPersonalityId; // when request completed, this will indicate that we started what we wanted
if (IsActive())
{
LOG("Request is outstanding, cancelling first" );
Cancel();
}
iUsb.TryStart(aPersonalityId, iStatus);
SetActive();
break;
}
case EUsbServiceStarted:
{
LOG("UsbServiceState == EUsbServiceStarted");
TInt currentPersonality(0);
err = iUsb.GetCurrentPersonalityId(currentPersonality);
if (KErrNone != err)
{
LOG1( "Error getting current personality err = %d" , err);
return err;
}
if (aPersonalityId == currentPersonality) // already started
{
LOG("Personality already started" );
iObserver.UsbServiceControlReqCompletedL(KErrInUse);
return KErrNone;
}
// we need to stop current personality and start service with new personailty id
iPersonalityId = aPersonalityId; // this will indicate that we want to start this personality after
StopL();
// start new personality in RunL() when state is Idle
break;
}
case EUsbServiceStarting:
{
LOG("UsbServiceState == EUsbServiceStarting" );
// do exactly the same as in case of EUsbServiceStopping;
// break statement is not required here
}
case EUsbServiceStopping:
{
LOG( "UsbServiceState == EUsbServiceStopping" );
// subscribe for usb service state change, and start new usb service once current one started/stopped
iPersonalityId = aPersonalityId; // this will indicate that we want to start this personality
// this check is needed due to usb service might be stopping by other client
if (IsActive())
{
LOG( "Request outstanding. Waiting for completion" );
return KErrNone; // when the outstanding request get completed, we start usb services with iPersonalityId
}
// otherwise, monitor usb service state
iUsb.ServiceStateNotification(iServiceState, iStatus);
SetActive();
break;
}
case EUsbServiceFatalError:
{
LOG( "UsbServiceState == EUsbServiceFatalError" );
return KErrGeneral;
}
default:
{
PANIC( EUnknownUsbServiceState);
}
}
return KErrNone;
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
TInt CUsbServiceControl::StopL()
{
LOG_FUNC
TUsbServiceState serviceState;
TInt err = iUsb.GetServiceState(serviceState);
LOG2("err = %d; serviceState = %d" , err, serviceState);
if (KErrNone != err)
{
return err;
}
switch (serviceState)
{
case EUsbServiceIdle:
{
LOG("UsbServiceState == EUsbServiceIdle" );
return KErrNone;
}
case EUsbServiceStarted:
{
LOG("UsbServiceState == EUsbServiceStarted" );
if (IsActive())
{
LOG("Request is outstanding, cancelling it" );
Cancel();
}
iUsb.TryStop(iStatus);
SetActive();
break;
}
case EUsbServiceStopping:
{
LOG( "UsbServiceState == EUsbServiceStopping" );
// do exactly the same as in case of EUsbServiceStarting;
// break statement is not required here
}
case EUsbServiceStarting:
{
LOG("UsbServiceState == EUsbServiceStarting" );
// subscribe for usb service state change, and stop usb service once current one started
iPersonalityId = 0; // this will indicate that we do not want to start this personality
// this check is needed due to usb service might be starting by other client
if (IsActive())
{
LOG("Request is outstanding, waiting for completion" );
return KErrNone; // when this request get completed, we request to stop usb services
}
// otherwise, monitor usb service state
iUsb.ServiceStateNotification(iServiceState, iStatus);
SetActive();
break;
}
case EUsbServiceFatalError:
{
LOG("UsbServiceState == EUsbServiceFatalError" );
return KErrGeneral;
}
default:
{
PANIC( EUnknownUsbServiceState);
}
}
return KErrNone;
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CUsbServiceControl::RunL()
{
LOG_FUNC
LOG1("iStatus = %d" , iStatus.Int());
if (KErrNone != iStatus.Int())
{
iObserver.UsbServiceControlReqCompletedL(iStatus.Int());
return;
}
TUsbServiceState serviceState;
TInt err = iUsb.GetServiceState(serviceState);
if (KErrNone != err)
{
LOG1("Error while getting service state %d" , err);
iObserver.UsbServiceControlReqCompletedL(err);
return;
}
switch (serviceState)
{
case EUsbServiceIdle: // usb service stopped
{
LOG("UsbServiceState == EUsbServiceIdle" );
if (iPersonalityId != 0) // during service stopping, requested to start it
{
LOG1("Requested to start personality %d. Starting it." , iPersonalityId);
TInt personalityId = iPersonalityId;
iPersonalityId = 0; // reset
err = StartL(personalityId);
if (KErrNone != err)
{
iObserver.UsbServiceControlReqCompletedL(err);
}
return;
}
// otherwise, we've done, notify
iObserver.UsbServiceControlReqCompletedL(KErrNone);
break;
}
case EUsbServiceStarted:
{
LOG("UsbServiceState == EUsbServiceStarted" );
TInt currentPersonality(0);
err = iUsb.GetCurrentPersonalityId(currentPersonality);
if (KErrNone != err)
{
LOG1("Error while getting PersonalityId err = %d" , err);
iObserver.UsbServiceControlReqCompletedL(err);
return;
}
if (iPersonalityId == currentPersonality) // already done
{
LOG("Personality already started" );
iPersonalityId = 0;
iObserver.UsbServiceControlReqCompletedL(KErrNone);
return;
}
if (iPersonalityId == 0) // during service start requested to stop it
{
LOG("Requested to stop personality. Stopping." );
err = StopL();
if (KErrNone != err)
{
LOG1("Error while stopping personality err = %d" , err);
iObserver.UsbServiceControlReqCompletedL(err);
}
return;
}
// otherwise, during service start, requested to start it with another personality
LOG1( "Requested to start personality %d. Starting it.", iPersonalityId);
TInt personalityId = iPersonalityId;
iPersonalityId = 0; // reset
err = StartL(personalityId);
if (KErrNone != err)
{
LOG1("Error while starting personality err = %d" , err);
iObserver.UsbServiceControlReqCompletedL(err);
}
break;
}
case EUsbServiceStarting:
{
// do exactly same as in EUsbServiceStopping
// break statement is not required here
LOG("State == EUsbServiceStarting. Continue." );
}
case EUsbServiceStopping:
{
// we are not interested in these states, just continue monitoring
LOG("State == EUsbServiceStopping. Continue." );
iUsb.ServiceStateNotification(iServiceState, iStatus);
SetActive();
break;
}
case EUsbServiceFatalError:
{
LOG("UsbServiceState == EUsbServiceFatalError" );
iObserver.UsbServiceControlReqCompletedL(KErrGeneral);
break;
}
default:
{
PANIC( EUnknownUsbServiceState);
}
}
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
TInt CUsbServiceControl::RunError(TInt aError)
{
LOG_FUNC
LOG1("aError = %d", aError );
TRAP_IGNORE(iObserver.UsbServiceControlReqCompletedL(aError));
return KErrNone;
}
// ---------------------------------------------------------------------------
//
// ---------------------------------------------------------------------------
//
void CUsbServiceControl::DoCancel()
{
LOG( "Cancelling interest to Usb TryStart.")
iUsb.CancelInterest(RUsb::ETryStart);
LOG( "Cancelling interest to Usb TrySop.")
iUsb.CancelInterest(RUsb::ETryStop);
LOG("Cancelling interest to usb states notifications.")
iUsb.ServiceStateNotificationCancel();
}